Method of positioning problem regions covered with indoor wireless network
US9936407B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2014 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Dec 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Method of positioning blind coverage regions in an indoor wireless network. The method comprises the following steps: constructing an indoor and outdoor combined three-dimensional spatial structural model of a target scene; recording and storing information of wireless access equipment which can be received by the target scene, both from the indoor wireless network and from an outdoor (e.g., cellular) network with overlapping coverage; establishing a wireless fingerprint database of the target building covering both the indoor and the outdoor wireless networks; when loss of coverage is detected, the UE handing over to the outdoor network to transmit a measurement report from which the outdoor network can derive the UE's position (e.g., through triangulation); deriving the UE's position in the indoor area by superimposing the obtained information on the fingerprinting database (by analyzing only those cell-Id's that appear on the MR) and interpolating the result (mean square error); if the obtained position is covered by the fingerprinting database (i.e., it is in the indoor area), determining that the position corresponds to a blind coverage area inside the indoor wireless area; ot…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.